121.java.lang.Object Wrappers
象 int char float 等这样的"类型" 不是类
因此, 用户不能够象这样使用方法
int var;
var.toString
Thus ALL types have associated wrappers used like
Character wrappedchar = new Character(char);
now wrappedchar has lots of good methods you can use such as:
wrappedchar.equals(anotherobject);
wrappedchar.toString();
There are also static (class) functions such as:
toUppercase(char ch);
isUpperCase(char ch);
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